Ratings do not matter, period! The new trend by some of America’s best boulderers is to not rate problems. That’s fine, but guessing at a relative difficulty does not hurt either. The V Scale cannot be directly compared to the Yosemite scale, yet there have been attempts and a general scheme seems to have emerged. The following has been supplied by inference to published comparisons and graded problems, with only a few modifications. A case for uniformity could be made, and I have tried to incorporate some continuity between the grades and the size of each class. Ratings are subjective. 

	V-                                     Under 5.10a
	V0                                     5.10 a-b
	V0+                                   5.10 c-d
	V1                                     5.11 a-b
	V2                                     5.11 b-c
	V3                                     5.11 c-d
	V4                                     5.12 a-b
	V5                                     5.12 b-c
	V6                                     5.12 c-d
	V7                                     5.13 a-b
	V8                                     5.13 b-c
	V9                                     5.13 c-d
	V10                                   5.14 a
	V11                                   5.14 b
	V12                                   5.14 c
	V13                                   5.14 d
	V14                                   5.15
	V15                                   Hard

Or something like that or altogether different.

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